Surah Al-Imran, ayah 141

3:141

وَلِيُمَحِّصَ ٱللَّهُ ٱلَّذِينَ ءَامَنُواْ وَيَمۡحَقَ ٱلۡكَٰفِرِينَ ١٤١

Waliyumahhisallāhul-ladhīna āmanū wayamhaqal-kāfirīn

And that Allāh may purify the believers [through trials] and destroy the disbelievers.